1. Health Research Institute, Faculty Health Sciences, Autonomous University of Santo Domingo, and Institute for Dental Education and Research, San Francisco de Macorís, Dominican Republic.
2. Department of Reconstructive Oral Care, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Free University Amsterdam, The Netherlands.
3. Bioscience Research Center, College of Dentistry, University of Tennessee Health Science Center, Memphis, TN, USA.